It stops at the 35 percent. It is also important if the non-custodial parent pays on other children. The child support will stop at 50 percent of pay. This means if the parent is paying support for other children or cases it could cause an issue on your support if you filed after the other parents. It is important to file as soon as possible. Some people believe support is determined by what the custodial parent needs. This is false. The custodial parent could be wealthy or poor and the support is still done by the guideline above. It is also possible to modify the support if you think the non-custodial parent now makes more money. It must be a large increase. Most places say 30 percent pay increase to modify. Are you receiving the correct child support?